Astrobiologists have discovered ancient pockets of water that have been isolated deep underground for billions of years. The water is trapped in rocks that are similar to rocks known to be on Mars, and it contains abundant chemicals known to support life.

Scientists have provided new information about the relationship between oxygen in Earth's early atmosphere and the sulfur cycle. The study could shed light on how oxygen accumulated in Earth's atmosphere - an event that had profound implications for life on our planet.

A new study suggests that the way carbon moves from within a planet to the surface plays a big role in the evolution of a planet’s atmosphere. If Mars released much of its carbon as methane, for example, it might have been warm enough to

By studying locations as widespread as New Jersey and North Africa, a team of scientists has found a link between one of Earth's largest mass extinctions and gigantic volcanic eruptions. The study could hint at how sudden climate shifts could affect life's future on Earth.

New research shows that some of the tectonic processes driving volcanic activity today were occurring as early as 3.8 billion years ago. The study provides new insight about the early environment of Earth.